Mobile Proxy Startup Data
Most startup datasets are built on press releases, which is why they disagree with reality. The sources that hold up are statutory: company registries, regulatory filings, and the hiring a company is actually doing.
- Registries are the ground truth — a filing is a legal statement; an announcement is marketing.
- Every jurisdiction has its own — Companies House, the national equivalents, and no global register.
- Hiring leads announcements — job postings show direction months before a press cycle does.
- People are personal data — company officers are named in public registers and are still individuals.
Reach each jurisdiction’s own company register.
Track roles and locations as a growth indicator.
Startup Data Sources That Hold Up
Most startup datasets are built substantially on press releases, which is why they drift from reality. A funding announcement is a communications decision: made when it suited the company, phrased to flatter, and frequently rounded. A registry filing is a legal statement made under obligation, recording an event on the date it happened.
Building on the statutory record instead changes what the dataset can support. Share allotments, director appointments and departures, registered address changes, accounts, and charges over assets are all filed because they must be, which makes them boringly reliable in exactly the way an analysis needs.
| Source | What it records | How much to trust it |
|---|---|---|
| Company registry | Incorporation, officers, shares, accounts, charges | Ground truth, filed under legal obligation |
| Securities filings | Exempt offerings and private rounds in some jurisdictions | High, where the obligation applies |
| Job postings | Roles, locations, seniority, volume over time | Strong leading indicator; noisy on any single day |
| Funding databases | Announced rounds, investors, valuations | Useful for coverage, weak as a record of fact |
| Company website and docs | Product direction, positioning, customer claims | Marketing, but dated and comparable over time |
Company Registries by Jurisdiction
The defining constraint is that there is no global register. The United Kingdom runs Companies House with unusually open bulk data. The United States incorporates at state level, with federal securities filings covering exempt offerings that reveal private rounds. Most European countries operate a national business register with widely varying openness, and OpenCorporates aggregates many of them without replacing any of them.
Several of those national services degrade or restrict access from foreign address ranges, and some render search behaviour differently depending on where the visitor appears to be. Reaching each register from inside its own jurisdiction removes an entire class of intermittent failure that is otherwise extremely hard to attribute — you simply get fewer results, with no indication that anything was withheld.
Hiring as a Growth Signal
Job postings are the earliest public indicator of intent that a company produces. A firm opening roles in a new country is expanding there months before any announcement. A shift in the balance between engineering, sales and support signals a change of stage. A hiring freeze appears as postings quietly disappearing, long before anybody says anything.
Postings are also timestamped and location-bearing by nature, which makes them unusually easy to turn into a series. The trap is that boards and career pages surface roles by the visitor’s region, so a listing aimed at one market may not appear elsewhere. That produces a specific and quite misleading failure: a company looks as though it stopped hiring in a country when in fact you stopped being shown those roles.
company … role_title … function engineering | sales | support | ops location … seniority … first_seen 2026-05-02 # you derive these last_seen 2026-08-24 viewed_from DE # the exit market that could see this posting
Keeping a Startup Dataset Current
Registry data updates when something is filed, which is irregular and often late — accounts in particular arrive near the deadline rather than near the year end. Hiring data changes daily. Those two rhythms suggest an obvious split: poll postings daily, sweep registries weekly, and treat the filing date rather than the collection date as the event date.
- Key on the registered number — Companies rename constantly. The registration identifier is the only stable key you will get.
- Store the filing date and the collection date — The gap between them is frequently months and is itself informative.
- Reconcile announcements against filings — Where they disagree, the filing is the fact and the difference is a finding.
- Treat officers as personal data — Directors and beneficial owners are named by design, and several jurisdictions limit bulk reuse. Take your own legal advice before aggregating individuals across registers.
For the neighbouring public-register material see government data, and for the sampling design behind multi-market comparison, market research.
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Frequently Asked Questions
Why prefer registries over funding databases?
Because a registry filing is a legal statement made under obligation, while a funding announcement is a communications decision. Registries record share allotments, director changes, registered address, accounts and charges — events that happened, on the date they happened. Announcements record what a company chose to say, when it suited them, and frequently round the numbers. Aggregator databases are built substantially on the latter, which is why they drift from the statutory record.
Which registries matter?
It is entirely jurisdictional, which is the defining constraint. The United Kingdom has Companies House with unusually open data. The United States has state-level incorporation plus federal securities filings, including the exempt-offering notices that reveal private rounds. Most European countries run a national business register with varying openness, and OpenCorporates aggregates many of them without replacing any. There is no global register to query once.
How is hiring a useful signal?
It is the earliest public indicator of intent. A company opening roles in a new country is expanding there months before any announcement; a shift in the balance between engineering, sales and support roles signals a change in stage; a hiring freeze shows up as postings quietly disappearing. Postings are also timestamped and per-location by nature, which makes them unusually easy to turn into a series.
Do job boards need local collection?
Often, yes. Boards and career pages surface roles by the visitor’s region, so a listing aimed at one market may not appear elsewhere. That produces a specific and quite misleading failure: a company appears to have stopped hiring in a country when in fact you simply stopped being shown those roles.
What about the people named in filings?
Directors, officers and beneficial owners appear in public registers by design, and that does not stop the information being personal data. Several jurisdictions place explicit limits on bulk extraction and republication of register data even though anyone may look up a single company. Purpose and retention matter, and it is a question for your own legal advice rather than a technical setting.
Related Mobile Proxy Guides
Startup research is register work, which puts it beside the government and nonprofit sources.
Business use cases
Core mobile proxy guides
Reach Every Register Locally
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